ShareThis found that Pinterest could be an especially rewarding play for advertisers looking to reach audiences on their mobile devices. According to the data, Pinterest users shared content via mobile three times as much as they did on desktop, with the social network being the most popular sharing channel for iPad users.

ShareThis CEO Kurt Abrahamson attributed this popularity to Pinterest's visually appealing design and high quantity of photographic content, which he says looks good on the iPad's large screen.

Abrahamson said Pinterest is the perfect place for advertisers to target moms, a group he says share content three times as much as the general public. The demographic does 29 percent of its sharing on Pinterest, second to the 34% of its sharing the group does on Facebook.

"We have been noticing the rise of Pinterest as a sharing channel over the last year," he said. "As Pinterest launches advertising products, it's a good time for brands who are targeting female and lifestyle verticals to consider advertising on Pinterest."